In this study, with the help of a disturbance observer, an adaptive fractional-order sliding mode control scheme is designed to achieve trajectory tracking indeterminate manipulators. Firstly, non-singular fast terminal (FO-NFTSM) surface presented increase convergence velocity controller. Secondly, reaching law on strength super-twisting algorithm ensure performance approaching stage. Meanwhil...

In this paper, an extension of algorithm for the implicit discretization a super-twisting sliding mode observer is presented. Implicit and explicit algorithms homogeneous differentiators, where no physical model information considered, are investigated in literature. This article studies behavior when considering models rather general class nonlinear systems. The discrete equations reformulated...

This study proposes a simplified super-twisting algorithm (SSTA) control strategy for improving the power quality of grid-connected photovoltaic (PV) systems. Some issues are considered in this including factor, reducing total harmonic distortion (THD) current, compensating reactive power, and injecting at same time energy supplied by PV system into grid considering non-linear load. improvement...

This paper proposes a high-order sliding mode control (HO-SMC) with the super-twisting (ST) algorithm for maximum power point tracking (MPPT) and grid-connected wind energy conversion system (WECS), based on squirrel-cage induction generator (SCIG). The main features of this strategy are attenuation chattering phenomenon inherent in first-order its robustness against external internal disturban...

Sliding mode control and disturbance compensation techniques are applied to a nonlinear speed algorithm for permanent magnet synchronous motor (PMSM). Optimizing the performance of PMSM systems with various disturbances uncertainties is challenging. To achieve satisfactory performance, sliding method based on super-twisting reaching law (STRL) presented. STRL can adapt dynamically variations co...

In practice, many systems are affected by mismatched disturbances, which do not satisfy the match condition. This study focuses on a variable gain super-twisting sliding mode controller that achieves global robust fixed-time stabilization of second-order with matched and disturbances without observers. The proposed variables adopt state-dependent exponent coefficient, improves robustness proper...